Paikkakunta: Int
Taajuus: 1296.500000 MHz
Duplex: - MHz
Aliääni: 0.000
Kanava: -
Modulaatio: USB
Lisätietoja: WSPR (pronounced "whisper") stands for “W
eak Signal Propagation Reporter.” The
WSPR software is designed for probing poten
tial radio propagatio
n paths using low-
power beacon-like transmissions. WSPR si
gnals convey a callsign, Maidenhead grid
locator, and power level using a compress
ed data format with strong forward error
correction and narrow-band 4-FSK modulation.
The protocol is effective at signal-to-
noise ratios as low as –28 dB in a 2500 Hz bandwidth. Receiving stations with
internet access may automatically upload reception reports to a central database.
The WSPRnet web site provides a simple user interface for querying the database, a mapping facility, and many other features.
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